UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) February 25, 2026

SOUTHWEST GAS HOLDINGS, INC.

(Exact name of registrant as specified in its charter)

Delaware

001-37976

81-3881866

(State or other jurisdiction of incorporation or organization)

(Commission File Number)

(I.R.S. Employer Identification No.)

8360 S. Durango Drive

Post Office Box 98510

Las Vegas, Nevada 89193-8510

(Address of principal executive offices) (Zip Code)

Registrant's telephone number, including area code: (702) 876‑7237

Securities registered pursuant to Section 12(b) of the Act:

Southwest Gas Holdings, Inc.:

Title of each class

Trading Symbol

Name of each exchange on which registered

Southwest Gas Holdings, Inc. Common Stock, $1 Par Value

SWX

New York Stock Exchange

Southwest Gas Corporation:

None.

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On February 25, 2026, Southwest Gas Holdings, Inc. released summary financial information to the general public, including the investment community, regarding operating performance for the quarter and twelve months ended December 31, 2025. A copy of the associated press release and summary financial information is attached hereto as Exhibit 99.

This Form 8-K and the attached exhibit are provided under Item 2.02 of Form 8-K and are furnished to, but not filed with, the Securities and Exchange Commission.

Item 9.01 Financial Statements and Exhibits

(d) Exhibits:

99 Press Release and summary financial information dated February 25, 2026.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.


						SOUTHWEST GAS HOLDINGS, INC.

February 25, 2026						/s/ Justin S. Forsberg
						Justin S. Forsberg
						Senior Vice President/Chief Financial Officer and Treasurer

EXHIBIT INDEX


Exhibit No.						Description
99						Press Release and summary financial information dated February 25, 2026 .

Southwest Gas Holdings, Inc. 8-K